[libvirt] [PATCH v2 5/6] virsh: Report errors from stream callbacks

Michal Privoznik mprivozn at redhat.com
Thu Jun 1 13:43:06 UTC 2017

On 06/01/2017 03:39 PM, Daniel P. Berrange wrote:
> On Thu, Jun 01, 2017 at 02:02:13PM +0200, Michal Privoznik wrote:
>> There are couple of callbacks we pass to virStreamSendAll(),
>> virStreamRecvAll() or its sparse variants. However, none of these
>> callbacks reports error if one occurs and neither do the
>> virStream* functions leaving user with very unhelpful error
>> message:
>>   error: cannot receive data from volume fedora.img
>>   error: An error occurred, but the cause is unknown
> If we change the code to honour errno set in the callbacks,
> we only need to deal with ensuring  virFileInData sets
> the errno correctly.

Okay, makes sense. Will post v3.

Meanwhile, do you have any clever idea on this?



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